History for IPR disclosure
The Public Patent Foundation's Statement about possible IPR claimed in RFC 2462 and RFC 2464 belonging to Microsoft Corporation

Date Type By Text
2005-11-05 MsgOut (System) 
Date: 2005-11-06 01:38:44+00:00
From: IETF Secretariat <ietf-ipr@ietf.org>
To: set@bellcore.com,narten@us.ibm.com
Subject: Posting of IPR Disclosure
Cc: margaret@thingmagic.com,bob.hinden@gmail.com,brian@innovationslab.net

Dear Susan Thomson, Thomas Narten:

An IPR disclosure that pertains to your RFC entitled "IPv6 Stateless Address
Autoconfiguration" (RFC2462) was submitted to the IETF Secretariat on 2005-10-24
and has been posted on the "IETF Page of Intellectual Property Rights
Disclosures" (https://datatracker.ietf.org/public/ipr_list.cgi). The title of
the IPR disclosure is "The Public Patent Foundation's Statement about possible
IPR claimed in RFC 2462 and RFC 2464 belonging to Microsoft Corporation."

The IETF Secretariat
2005-11-05 MsgOut (System) 
Date: 2005-11-06 01:38:44+00:00
From: IETF Secretariat <ietf-ipr@ietf.org>
To: crawdad+ietf@fnal.gov
Subject: Posting of IPR Disclosure
Cc: margaret@thingmagic.com,bob.hinden@gmail.com,brian@innovationslab.net

Dear Matt Crawford:

An IPR disclosure that pertains to your RFC entitled "Transmission of IPv6
Packets over Ethernet Networks" (RFC2464) was submitted to the IETF Secretariat
on 2005-10-24 and has been posted on the "IETF Page of Intellectual Property
Rights Disclosures" (https://datatracker.ietf.org/public/ipr_list.cgi). The
title of the IPR disclosure is "The Public Patent Foundation's Statement about
possible IPR claimed in RFC 2462 and RFC 2464 belonging to Microsoft
Corporation."

The IETF Secretariat
2005-11-05 MsgOut (System) 
Date: 2005-11-06 01:38:44+00:00
From: IETF Secretariat <ietf-ipr@ietf.org>
To: ravicher@pubpat.org
Subject: Posting of IPR Disclosure
Cc: 

Dear Daniel Ravicher:

Your IPR disclosure entitled "The Public Patent Foundation's Statement about
possible IPR claimed in RFC 2462 and RFC 2464 belonging to Microsoft
Corporation" has been posted on the "IETF Page of Intellectual Property Rights
Disclosures" (https://datatracker.ietf.org/public/ipr_list.cgi).

The IETF Secretariat
2005-10-24 Posted (System) IPR Disclosure Posted
2005-10-24 Submitted (System) IPR Disclosure Submitted
2005-10-24 Legacy (System)
legacy_title_1: See Microsoft's response to this IPR disclosure.
From: http://www.ietf.org/ietf/IPR/microsoft-ipr-response-3rd-party.txt

Subject: RE: 499 patent review
Date: 13 March 2006
From: John Calhoon (LCA)
To: Contreras, …
legacy_title_1: See Microsoft's response to this IPR disclosure.
From: http://www.ietf.org/ietf/IPR/microsoft-ipr-response-3rd-party.txt

Subject: RE: 499 patent review
Date: 13 March 2006
From: John Calhoon (LCA)
To: Contreras, Jorge

Jorge,

After extensive review by our technical experts, Microsoft does not
believe that the 499 patent includes any claims which cover RFC 2462 or
RFC 2464

Please let me know if I can be of further assistance.

John Calhoon
2005-10-24 Legacy (System)
From: http://www.ietf.org/ietf-ftp/IPR/pubpat-ipr3-rfc2464.txt

The Public Patent Foundation's Statement about possible IPR claimed in RFC 2462 and RFC 2464 belonging to Microsoft Corporation
Date: 24 October 2005 …
From: http://www.ietf.org/ietf-ftp/IPR/pubpat-ipr3-rfc2464.txt

The Public Patent Foundation's Statement about possible IPR claimed in RFC 2462 and RFC 2464 belonging to Microsoft Corporation
Date: 24 October 2005
From: Dan Ravicher

Dear IETF:

Pursuant to IETF RFC 3979 Section 6.1.3, the Public Patent Foundation
("PUBPAT") hereby notifies IETF of the existence of intellectual
property rights that may relate to technology described in IETF
documents. Specifically, U.S. Patent No. 6,101,499 ("the '499 patent")
owned by Microsoft Corporation may relate to RFC 2462 - IPv6 Stateless
Address Autoconfiguration and RFC 2464 - Transmission of IPv6 Packets
over Ethernet Networks (collectively referred to as "IPv6").

Although IETF was previously notified of the '499 patent with respect to
IPv4 related documents (see
http://www.ietf.org/ietf/IPR/MICROSOFT-499.txt and
https://datatracker.ietf.org/public/ipr_detail_show.cgi?ipr_id=554), the
'499 patent's claims, including for example claims 1 and 30, could
possibly be read as also relating to IPv6. However, other than
identifying this potential relationship, PUBPAT takes no position
regarding the validity or scope of the '499 patent.

If we can provide any further information or be of any other assistance
to IETF in its review of this matter, please do not hesitate to contact me.

Sincerely,

Daniel B. Ravicher
Executive Director
Public Patent Foundation
1375 Broadway, Suite 600
New York, NY 10018
(212) 796-0571 direct
(212) 796-0570 main
(212) 591-6038 fax
ravicher@pubpat.org
www.pubpat.org